ISO ELEMENTARY AGRICULTURE 



side pressure which will spring or burst the walls 

 of a poorly constructed silo and admit air, 

 causing the silage to spoil. It must be perfectly 

 smooth on the inside, because silage should settle 

 evenly. Projections, or rough places on the inner 

 walls of a silo, will prevent this even settling, cause 

 dead air spaces, which spoil the silage. It must rest 

 on a strong, solid foundation, because the side pres- 

 sure and weight at the bottom are very great. This 

 pressure may burst a heavy stone wall and the great 

 weight will cause a silo placed on a poor foundation 

 to settle out of shape and crack the walls. 



Silage Is a Satisfactory Feed. If this building is so 

 constructed as to provide for sufficient ventilation and 

 to prevent freezing, and proper care is used in filling 

 the silo, the silage will be a very satisfactory feed to 

 use on the farm. 



Free Bulletins, U. S. Dept. of Agriculture. 



No. 32. Silos and Silage. 



No. 126. Practical Suggestions for Farm Buildings. 



Measurements. 

 Rules. 



1. To find the area of a triangle multiply the base by one-half 

 the height. 



2. To find the circumference of a circle multiply the diameter 

 by 3 1-7. 



3. To find the area of a circle multiply the square of the 

 radius by 3 1-7. 



4. The square of the hypotenuse of a right triangle is equal to 

 the sum of the squares of the other sides. 



NOTE: Make a drawing before attempting to solve any of the 

 following problems. 



